The XB10K is the correct aerial for K group transmitters for sites in poor signal areas. Its relatively compact size (and the fact it can be end mounted) makes it particularly suitable for loft installs, though that’s rather a waste of its good build quality…..

The XB16A is the correct aerial for A group transmitters for sites in the poorest signal areas.

The XB16B is the correct aerial for B group transmitters for sites in the poorest signal areas.

The XB16K is the correct aerial for K group transmitters for sites in the poorest signal areas.

The Yagi18B is the correct aerial for B group transmitters for sites in poor signal areas.
Our Yagi 18 aerials have particularly good build quality.

The Yagi18E is the correct aerial for E group transmitters for sites in poor signal areas.
Our Yagi 18 aerials have particularly good build quality.

The Yagi18K is the correct aerial for K group transmitters for sites in medium to poor signal areas, or, since it’s been effectively a wideband since 2013, any site in a medium strength signal area.
Yagi 18s have particularly good build quality.
Also available in a wall installation kit and a chimney installation kit.